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FINISHING 0F TABLE GLASSES, Se.

' 10.550,504. f PatentedNov. 26,1895.

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ANDREW EGRAHAM. PHUTOUTHOAWASNINGTDN. D.C

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UNITED VSTA-Tus PATENT OFFICE.

LEON HAVAUX, OF ST. GI-IISLAIN, BELGIUM.

FINISHING OF TABLE-GLASSES, 84C.

SPECIFICATION forming part of Letters Patent No. 550,504, dated November26, 1895.

Application tiled July 25, l893. Serial No. 481,451. (No model.)

To all whom it may concern:

Be it known that I, LEON HAVAUX, a subject of the King of Belgium,residing at St. Ghislain Belgium, have invented certain new and usefulImprovements in or Relating to the Finishing of Table-Glasses and theLike and in Apparatus Therefor, of which the following is aspecification.

The obj ect of this invention is to round off and polish the edges oftable-glasses, such as tumblers,previously cut by any means or process,and especially those cut by my electric process.

The invention consists, essentially, in an apparatus for grinding andpolishing the edges of glasses with tools towhich are given anintermittent or a continuous movement with a view to prevent their wearfrom localizing itself at any particular points, while the glass to beso treated is caused to rotate.

In the accompanying drawings, Figurel is a vertical section on the lineA' B of Fig. 2 of the apparatus carrying the tools to round od andpolish the edges of the glasses. Fig. 2 is a plan of the same. Fig. 3 isa vertical section, drawn to a larger scale than Figs. l and 2, ofportion of the apparatus, showing only a single device at work. Fig. 4is a plan of Fig. 3.

In carrying the invention into practice I employ a table consisting ofthree circular, horizontal, superimposed plates P P P", preferably ofiron, and supported by, say, four feet and held apart bydistance-piecesE.

Any desired number of vertical spindles A are supported in suitablebearings provided in the plates P P and at their lower pointed ends onscrews C, screwedthrough the plate P and provided with hand-wheels orheads and jam-nuts. These screws C serve to raise or lower the spindlesA, which are provided with pulleys secured thereon, and carry at theirupper ends rimmed disks or cups rx, provided each with, conveniently,three setscrews. Upon these disks or cups are iiXed the wooden cups h,destined to hold the glasses to be operated upon.

A vertical shaft B is provided with two horizontal pulleys h h', whereofthe former, 7i, by a belt is driven from a motor and the second, h', isarranged to drive all the pulleys Y p by a single belt, as shown in Fig.2.

The shaft B is prolonged above the plate P for the purpose of carrying acam X, which may be iiXed at any desired height by means of one or moreset-screws, and which serves to impart vertical oscillating motion tothe levers z, pivoted on columns Y,mounted upon radial lines runningfrom the axis of the shaft B to the axes of the spindles A. These leversa carry at their inner ends small rollers VX, which rest upon the cam X,and at their outer ends, conveniently, iron frames W.

Four screws w, with hooked ends, hold two rubber rings ww2, Figs. 2, 3,and 4, in the inside of each frame and allow these to be submitted to acertain amount of torsion. rings are traversed bytubes or rods t z5',which rest one against the inner edge of the lip of the tumbler to roundit od and the other against the outer edge of the same, as shown inFigs. l and 3. The pressure of these rods or tubes against the tumbleris obtained through the torsion of the rubber rings fwywg.

In order to place a glass, whereof the edges are to be rounded od, inits cup l), the frame W of the corresponding lever z is iirst lifted byhand and then the rods or tubes t t are placed against the interior andexterior edges of the tumbler-lip, while at the same time These loweringthe form W, so that the roller VX is y again brought into contact withthe cam X and the oscillatory movement of the lever Z is resumed.

The rods or tubes it rub against the edges of the tumbler-lip by anupand-down movement in a vertical plane passing through their aXes andoscillating round the point at which they are attached to the rubberring, and it is by this special movement that they grind away and polishthe edges of the lip.

For rounding the tumbler edges the rods or tubes t t are constructed ofhard glass or equivalent, and for polishing they are of wood tted withpieces of cork covered with damp tripoli. It is by the rapid rubbing ofthis cork against the edges to be polished that the brilliance, of whichit has been deprived by the preceding apparatus, is restored to theglass.

The construction of the apparatus may be modified in Various Ways. Forinstance, the vertical shafts A may be rotated by substituting for thepulley p in each case a number of disks in frictional contact with alarge cen tra-l disk mounted on the shaft B.

I claiml. In apparatus for finishing the edges of table glasses, thecombination with a revoluble glass holder and operating mechanismtherefor, of a reoiprooable frame, operating mechanism for the frame,rods or tubes mounted in the frame, and india rubber bands or ringsconnecting the rods to the frame; substantially as set forth.

2. In apparatus for nishing the edges of table glasses, the combinationwith arevoluble glass holder, a reciprocable frame, rods or tubesmounted in the frame, india rubber bands or rings, hooked screwsl foreonneotin g the bands to the frame, and operating meehanism for theglass holder and frame; substantially as set forth.

3. In apparatus for nishing the edges of table glasses, the combinationof a revoluble glass holder, a reciprooable frame, rods or tubes mountedin the frame, india rubber bands or rings through Which the rods arepassed, hooked screws for regulating the torsion of the bands, a levercarrying the frame, a cam operating the lever, and operating mechanismfor the cam and glass-holder; substantially as set forth.

In testimony whereof I have signed this specication in the presence oftwo subscribing Witnesses.

LEON IIAVAUX. IVitnesses:

GEORGE BEELE, GREGORY PHELAN.

